July weather forecast
L'Observatoire, French Guiana

July, the same as June, in L'Observatoire, French Guiana, is another hot summer month, with an average temperature fluctuating between 31.3°C (88.3°F) and 21.1°C (70°F).

Temperature

In July, L'Observatoire experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 30.4°C (86.7°F) in June to a still hot 31.3°C (88.3°F). Throughout the month of July, the average temperature in L'Observatoire dips to an agreeable 21.1°C (70°F) at night.

Heat index

In July, the average heat index is estimated at a scorching 44°C (111.2°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In L'Observatoire, French Guiana, the average relative humidity in July is 85%.

Rainfall

In L'Observatoire, during July, the rain falls for 20 days and regularly aggregates up to 61mm (2.4") of precipitation. In L'Observatoire, during the entire year, the rain falls for 259.3 days and collects up to 898mm (35.35") of precipitation.

Daylight

In L'Observatoire, French Guiana, the average length of the day in July is 12h and 21min.
On the first day of July, sunrise is at 06:28 and sunset at 18:51. On the last day of the month, sunrise is at 06:32 and sunset at 18:51 -03.

Sunshine

In July, the average sunshine is 7.9h.

UV index

The months with the highest UV index in L'Observatoire are July through November, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 7 in July translates into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.